POSITION DATA CONVERTER AND POSITION DATA CONVERSION METHOD

PROBLEM TO BE SOLVED: To convert a specific position of a photographic image photographed by a photographing device into a position of a managing coordinate system, and to convert a specific position of the managing coordinate system into a position of a projection image projected by a projector. SOLUTION: This position data converter 62 finds first management position data 74 showing the position of the managing coordinate system on the basis of reference body position data 71, a drive control value 73 of a driving device 7, and first image position data 72 showing a desired position of the photographic image. The position data converter 62 finds second image position data 76 showing the projection image corresponding to the position of the managing coordinate system projected to a projection content 19a on the basis of second management position data 75, the drive control value 73, and the reference body position data 75. The position data converter 62 produces projection image data 26 wherein the projection content 19a is disposed in the position shown by the second image position data 76, and provides the projection image data 26 to the projector 5. COPYRIGHT: (C)2008,JPO&INPIT